France has mobilized 70,000 police officers across the country before expected weekend demonstrations, as authorities investigate a suspected terrorist attack west of Paris. The security crackdown will involve helicopters, armoured vehicles and water cannon, with the government seeking to prevent more clashes and violence. Tensions rose after the arrest of a 39-year-old man following a shooting in Trapp in which one person died and four others were injured, including a 12-year-old girl. Interior minister Laurent Nuñez said the incident was initially described as relatively random, but the investigation is continuing and the crime appears to have an “obviously” terrorist character. He added that the motive may be racist. Local investigators believe the suspect likely fired at random from inside a car. The mayor of Trapp said the deceased and at least one injured person were of African origin. President Emmanuel Macron said France stands in solidarity with the victims of the “horrible ordeal”. He ordered that protests planned by people or groups without a lawful basis be banned and said the general recommendation is not to hold demonstrations. For union requests, prefects will act under the law and can offer alternative routes. Macron blamed “ultra-left groups” for what he described as political and subversive actions during violence last weekend, when protests in Paris included clashes and fires and police were reinforced on the streets. Because of the protests, the Louvre and the Musée d’Orsay will close and 24 Paris metro stations will not operate. A Ligue 1 match between Paris Saint-Germain and Olympique Lyon, scheduled for Sunday evening at Parc des Princes, was postponed to Monday. The man arrested over the Trapp shooting remains in custody as investigators continue the suspected terrorist probe.